But if they complete everything n we had more lines they win cause of points adding extra lines is giving them more points. While they can line up 2-4 lines n though we destroyed everything first they can still win

Also no, the first tie breaker is who defeated the highest percentage of line-ups set. So the fewer lines you have set the more impact occurs when they are defeated. Defeating a line gives 0 points. You need to take the tower to gain them